Re: Private sip modules conflict with public sip module
Phil Thompson <[email protected]>
| Newsgroups | gmane.comp.python.pyqt-pykde |
|---|---|
| Message-ID | <[email protected]> |
On 18/08/2019 16:52, Scott Talbert wrote: > On August 18, 2019 11:39:22 AM EDT, Scott Talbert <[email protected]> > wrote: >> >> >> On August 18, 2019 11:03:21 AM EDT, Phil Thompson >> <[email protected]> wrote: >>> On 18/08/2019 15:45, Scott Talbert wrote: >>>> On Sun, 18 Aug 2019, Phil Thompson wrote: >>>> >>>>>> See the below example: >>>>>> >>>>>> $ python3 >>>>>> Python 3.7.4 (default, Jul 9 2019, 16:32:37) >>>>>> [GCC 9.1.1 20190503 (Red Hat 9.1.1-1)] on linux >>>>>> Type "help", "copyright", "credits" or "license" for more >>>>>> information. >>>>>>>>> import PyQt5.sip >>>>>>>>> import sip >>>>>>>>> sip >>>>>> <module 'PyQt5.sip' from >>>>>> '/usr/lib64/python3.7/site-packages/PyQt5/sip.so'> >>>>>>>>> >>>>>> >>>>>> Basically, if you import a private sip module and then import the >>>>>> public one, it doesn't work. It seems to be due to this: >>>>>> >>>>>> >>> https://www.riverbankcomputing.com/hg/sip/file/4.19-maint/siplib/siplib.c#l1293 >>>>> >>>>> Why would you want to do that? >>>> >>>> I don't particularly *want* to do that, but it happens in the wild >>>> with applications. For example: >>>> >>>> fsleyes imports matplotlib >>>> matplotlib imports PyQt as part of its backend detection >>>> fsleyes imports wxpython >>>> wxpython imports sip -> fail >>> >>> wxpython uses a private copy of the sip module so I don't see what is >>> importing a top-level sip module in that situation. >> >> I guess I left out an important detail. I patch wxPython to use the >> top-level sip module. > > But this is just one example. I guess the bottom line is: do you > consider this a bug, or is your answer that no one should using the > top-level sip module? No up to date package should be using a top-level sip module. If you are patching wxpython(!) then you can remove the reference PyQt adds sys.modules first. Phil _______________________________________________ PyQt mailing list [email protected] https://www.riverbankcomputing.com/mailman/listinfo/pyqt